ARP HEAD STUD KIT, BMW S55, N55

 This is a completely custom kit designed specifically for the almighty N55/S55.*N55 option features: (14) 11mm ARP Head Studs (14) ARP Washers for 11mm Stud (14) ARP Nuts for 11mm StudsInstall tips: MUST Drill and Tap the (4) 9mm holes in the engine block to make them 11mm holes. This way all the engine block holes are 11mm, and fit ALL (14) 11mm Studs.Torque Specs: All studs torque down through 3-equal steps to 95 ft lbs*S55 option features: (14) 11mm ARP Head Studs (14) ARP Washers for 11mm Stud (14) ARP Nuts for 11mm StudsInstall Tips: Entirely Bolt-On kit, NO modification necessary, threads right up as factory stud replacement!Torque Specs: All studs torque down through 3-equal steps to 95 ft lbs*